High 7.1Published Sep 15, 2026

CVE-2026-53966XWiki Platform: Privilege escalation from edit to script right through Live Data editing

Updated under an hour ago (2026-10-19 11:40 UTC)

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It affects xwiki-platform. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for xwiki-platform

Exploited in the last 30 days

XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.

CVSS: 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

xwiki xwiki-platform xwiki:platform (from the name)	from 13.4-rc-1, < 16.10.17; from 17.0.0-rc-1, < 17.4.10; from 17.5.0-rc-1, < 17.10.4; from 18.0.0-rc-1, < 18.1.0-rc-1	CNA record

References

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-45ph-gxxr-gwgwx-refsource-confirm
https://github.com/xwiki/xwiki-platform/commit/1ddb954767e50782be960b953b012c1242f6843bx-refsource-misc
https://github.com/xwiki/xwiki-platform/commit/448b0f074cc6711410eb2647c4740454c92d1626x-refsource-misc
https://github.com/xwiki/xwiki-platform/commit/778b82b4806ce7ebddb775f953545ff73b841f8bx-refsource-misc
https://github.com/xwiki/xwiki-platform/commit/fbad7dac8f46c560577e41b9259cbbbbd343e6fcx-refsource-misc
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-16.10.17x-refsource-misc
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.10.4x-refsource-misc
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.10x-refsource-misc
https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-18.1.0-rc-1x-refsource-misc
https://jira.xwiki.org/browse/XWIKI-23986x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.